Most times, when a person travels down more than 30 storeys, it’s in an elevator. But a group of Calgary explorers used helicopter rides, helmets, headlamps and scuba gear to reach extreme depths.

During two expeditions between Thanksgiving 2017 and New Year’s 2018, a team of cave explorers worked tirelessly to explore, study and map out what is now being called Canada’s deepest cave, Bisaro Anima.

Travelling to the Mt. Bisaro plateau just north of Fernie, B.C., the team was carrying on the work of the Alberta Speleogical Society, which began in 2012. At the time, caver Jeremy Bruns was the first person to rappel into the cave’s entrance, according to a release from the Bisaro Plateau Caves Project.

WATCH BELOW: A group of cavers has explored the nooks and crannies in the deepest recorded cave in Canada. As Lauren Pullen reports, the cavers still haven’t reached the bottom.

“The consequences of an injury in this environment are tremendous, due to the hazardous conditions and exceptional remoteness,” expedition member and provincial coordinator of the Alberta/BC Cave Rescue Service Christian Stenner said in a release.

The cave was found near Mt. Bisaro, which is named after Canadian infantryman Torindo Bisaro. Bisaro was from Fernie and fought in the Second World War. The Bisaro Plateau Caves Project said because of this, features of the cave were given war-themed names, including passages dubbed “the Trenches,” “Dieppe” and “The Black Watch.”